Final answer:
The dietitian should first assess the 9-month-old infant's diet and growth history, rule out medical conditions, and if necessary, revise feeding practices to ensure a balanced nutrition that suits the infant's needs.
Step-by-step explanation:
In a consultation concerning a 9-month-old infant whose weight for length is greater than the 95th percentile, the dietitian should first assess the infant's overall diet and growth patterns. This includes comparing current measurements with previous growth records, evaluating dietary intake including whether the infant is being overfed, and reviewing possible contributing factors like physical activity and family history.
Consulting with a pediatric healthcare provider is crucial to rule out any underlying medical conditions. If overfeeding is suspected with the iron-fortified, milk-based formula, creating a balanced approach to nutrition that still meets the infant's developmental and nutrient needs is essential, potentially involving gradual changes to feeding practices.